Pastry brush



FIG. 1 is a perspective view of a pastry brush;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof, the left side elevation view being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines represent unclaimed matter and form no part of the claimed design. 

CLAIM The ornamental design for a pastry brush, as shown, and described. 